Erasing-machine.



1). LEMON. BEASING MACHINE.

APPLICATION FILED JULY '1, 1911.

1,077,146. r I Patented Oct. 28,1913.

2 SHEETS-SHEET 1.

LOW H1 cfiemmu wi/imeooeo COLUMBIA PLANOORAPH C0..WMHINOTON, D. c.

1 3118111366. Oct. 28, 1913.

2 SKEETS-SHEET 2.

D. M. LEMON.

ERASING MACHINE.

APPLICATION FILED JULY 7, 1911.

COLUMBM PMNOGRAPN CO.,WASHINGTON. D. C.

DON M. LEMON, 0F BOSTQN, MASSACHUSETTS, ASSIGNOR 0F ONE-HALF TO ERNESTV.

PAGE, OF ROSLINDALE, MASSACHUSETTS.

I ERASING-MACHINE.

Specification of Letters Patent. Application filed July 7, 1911.

Patented Oct. 28, 1913. Serial No. 637,374.

To all whom it may concern:

Be it known that I, DON M. LEMON, a citizen of the United States,resident of Boston, in the county of Suffolk and State of Massachusetts,have made a certain new and useful Invention in Erasing-Machines; and Ideclare the following to be a full, clear, and exact description of thesame,such as will enable others skilled in the art to which itappertains to make and use the invention, reference being had to theaccompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification.

Figure 1 is a perspective view of the invention. Fig. 2 is a centralvertical longitudinal section of the same, showing an eraser wheel ateach end of the slidable rod. Fig. 3 is a section on the line 3-3, Fig.2. Fig. 1 is a detail face view of the loose wheel showing also theinner end of the sleeve upon which it is mounted, both parts beingremoved from the incasement. Fig. 5 is a detail face view of the fast orfly wheel removed from the incasement. Fig. 6 is a detail side view ofthe incasement, showing the cleaner for the erasing wheel, as in use.Fig. 7 is a central vertical longitudinal section of the clamp forengagement with the edge of a table, showing the standard in engagementtherewith. Fig. 8 is a detail perspective view of this clamp, with thestandard in engagement therewith and partly broken away.

The invention has relation to erasing machines designed to facilitatethe erasure of characters or marks, and it consists in the novelconstruction and combinations of parts, as hereinafter set forth.

In the accompanying drawings, illustrating the invention, the numeral 1designates a support adapted to be fixed against movement upon a tableor the like, and carrying a standard 2 upon the upper end of which isrotatably mounted an incasement or hood 4. Journaled within thisincasement is a shaft 5, having a fast wheel 6, which is preferably afly wheel and is provided with a ratchet and pawl connection 7 withawheel 8, loosely mounted to turn freely, preferably upon a sleeve 9,surrounding said shaft.

The shaft 5 is provided with a longitudinal aperture 10, with which arod 11 has slidable engagement, in such manner that it will turn withsaid shaft, which forms a carrier for said rod. It is preferred to havethe aperture 10 and the rod 11 of angular cross section, as shown. Therod 11 is made of suitable length for slidable extension to the desireddegree, and carries at one end thereof an erasing wheel 12. rotatingtherewith, a handle piece 13 being loosely mounted upon said shaftwhereby the erasing wheel may be readily applied to the work, suchapplication being facilitated by the slidable extension of the rod andthe rotatable nature of the incasement within which the rod is mounted.Preferably the shaft is provided with a fast collar or SllOHldGflt,against which the erasing wheel is pressed to turn with the shaft by asleeve 15 fitting upon said shaft and a nut 16 having threadedengagement with the shaft end, the sleeve 15 being grooved externally atlb and carrying the handle sleeve 13, which is loosely mounted upon thepart 15, within the groove thereof.

The wheel 8 has afiixed thereto one end of a flexible strap or tape 19,which is automatically wound upon said wheel by a spring connection 20between the loose wheel 8 and the sleeve 9. This spring connection ispreferably helical, fitting within the wheel 8, which is preferablyhollow, one end of the spring being connected with the sleeve 9 and theother end thereof to the inner wall of the wheel 8.

When the flexible strap is drawn outward by the operator, which is doneby a sudden movement, the loose wheel will be caused to turn upon thesleeve 9, and through the ratchet and pawl connection will turn the flywheel and the shaft 5, the extensible rod and the eraser turningtherewithin a rapid manner. YVhen the strap is released the spring willact to turn the wheel 8 in the reverse direction to automatically rewindthe strap thereupon, the fly wheel, the shaft 5, the extensible rod andthe eraser continuing to turn in the same direction until their momentumis exhausted. In practice the handle part 13 is grasped by one hand ofthe operator, who thereby extends the rod to the desired degree andapplies the eraser to the matter to be erased, the incasement or hoodand the rod turning together upon the standard, in such application,when the handle knob of the strap is grasped by the other hand of theoperator and the strap quickly drawn out to rotate the eraser.

A cleaner blade 21 may be slidably mounted in a groove or notch 23 of alug 24 of the incasement, and is adapted to contact with the edge of therotating eraser wheel to clean the same when the rod carry ing theeraser wheel is pressed to the limit of its movement in one direction.In using the cleaner blade it is pressed upward in engagement with theedge of the wheel, and when released will drop back out of engagementtherewith through forceof gravity.

It is preferred to mount the support 1 upon a flat plate base 25, whichis designed to extend beneath the typewriter at one side thereof, thelegs of the typewriter at this side resting upon this base and theweight of the machine serving to fix the position of the support 1. Itis also preferred to provide" the standard with an elbow or lateralentension 26, upon the free end of which the inca-sement is mounted,whereby the parts may be swung around in the arc of a circle of whichthe standard is a center. If desired the incas'einent may be slidablymounted upon the standard for adjustment vertically and fixed in suchadjustment by a set screw 28 of a slidable collar 29 upon which theincasement rests. Or the lower tubular end 30 of the incasement may havea set screw 31 for engagement with the standard. The support 1 may alsohave a set screw 1i for engagement with the standaid 2, to secure thestandard in position as adjusted vertically.

"When the invention is to be used to erase matter not carried by atypewriting machine, for instance to erase matter from a ledger, it isadapted to be supported from the edge of a table or the like by the useof a clamp 32, from which the standard is supported. The standard inthis case may be provided with a vertically adjustable collar upon whichthe incasement rests, similar to the collar 29, or the clamp may have aset screw 33 at one side for engagement with the standard. The inventionmay also be used with the clamp 32 for erasing matter carried by atypewriter. Both ends of the slidable rod may carry an eraser wheel anda loose handle, as shown in Fig. 2 of the drawings, the one for use inerasing ink marks and the other for erasing pencil or other marks. Or asimple stop 34: may be used at one end of said rod. lhe slidable rod 11,is of slender flexible character, adapted to bend, which may be found ofadvantage in erasing in some cases.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent isi 1. In an erasing machine, a support, arotatable shaft having a journal bearing in said support, and providedwith a longitudinal aperture, a rod passing through said aperture andfixed to rotate with said shaft, an eraser wheel upon said rod, andmeans for rotating said shaft, said rod being relatively long withrespect to said shaft and having slidable adjustment in said aperture toproject more or less beyond said shaft at either end.

2. In an erasing machine, a support, a standard carried thereby, acasing upon said standard, a shaft having journal bearings in saidcasing and provided with a longitudinal aperture, a slender straight rodrelatively long with respect to said shaft and passing through andhaving sliding adjustment in said aperture to project more or lessbeyond the shaft at either end, said rod be ing fired to rotate withsaid shaft and having a shoulder, an eraser wheel upon said rod, agrooved sleeve upon said rod, a nut threaded upon the end of said rod toclamp the eraser wheel between said sleeve and said shoulder, a loosehandle sleeve in the groove of the first named sleeve, and means withinthe casing for rotating said shaft.

In testimony whereof I afiix my signature in presence of two witnesses.

DON M. LEMON.

/Vitnesses':

MARIE H. LOHMAN, MYRTA E. BnrrUM.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). 6;

